Hi again Mr. JoeV,
Yessir, you were right on this score. I kept working on the roms I wanted and did get them working with a couple added device files. Thank you very much. Qsound via DL-1425.bin was key, apparently a very common problem.
[For those who may come later, I had to obtain the DL-1425.BIN file, extract my rom zips, add the .bin to the resulting folders, then import the folders as roms in LaunchBox.]
Thank you, yes, I've learned that. I thought MAME .240 was the most recent so presumed it was consistent with the 2020-2021 rom fullsets, but I suppose I stand corrected!
Excellent advice, thank you. I forget that MAME is so portable because I only ever use it to fix my gamepad mapping, anymore, now that I've got my beautiful LB BigBox humming away. I *did* use this method to troubleshoot one of my white whales, Street Fighter II, which I learned only belongs to the LB metadata database in a couple later versions. The one I ended up using was Super Street Fighter II Turbo, which imported flawlessly after I added the Qsound file described above.
Let me ask this, though: presuming a friend were to purchase LB BigBox and a EmuMovies sub, would there be any way for me to archive my setup and send it so he could skip all the tinkering I've had to do? I realize it's a complex problem, but just in case it were easily answered...
Besides SF2, I had complications with Gauntlet, Berzerk, and 19XX: The Infinity War or whatever, all of which I got running, thank you. The only one I've had to give up on altogether is Ikaruga, which I own and imported as a Steam version, but I was really hoping to compete with my brothers and sisters using the new MAME high score charts.
The MAME high score charts are, IMHO, the most important thing to have happened in video gaming in decades. All of my base belong to hi2txt and whoever is responsible for that majestic accomplishment.
You're the best, JoeV, thank you ever so much for your help once more.
—BothES, Long Beach, Calif.